Pump



Aug. 26 1924. 1,506,312

G. G. KUNZMANN PUMP Filed Feb. 2 1924 Patented Aug. 26, 1924.

iseanz GEORGE G. KUNZMANZQ Oi? CEDAR RAEIDS, IQWA,

PUMP.

Application filed February 2, 1924.

To all whom 2'1? may concern.

Be it known that I, GEORGE G. KUNZ- MANN, a citizen of the UnitedStates, residing at Cedar Rapids, in the county of Linn and State ofIowa, have invented certain new and useful Improvements in Pumps, ofwhich the following is a specification.

This invention relates to pumps, and the object of the invention is toprovide means for attaching the fulcrum-bearing cap to the barrel orbody of the pump so that it will remain rigidly and permanently inplace, the connection or disconnection of the parts being easily andconveniently effected.

In the manufacture of iron pumps it has been the common practice tosecure the cap which carries the pump-handle fulcrum, to the body of thepump by one or more setscrews through a flange of the pump-cap. Thetendency of such set-screws is to continually loosen under the vibrationand strain due to pumping, and in an effort to screw the set-screwstightly enough to hold, a great many pumps have been broken. A. remedyfor this fault was found in flanging the pump and cap, or providinglateral, bolt-holding lugs, and clamping the parts together by means ofbolts parallel with the pump-body. The result was a perfectly strong anddurable pump-cap attachmentwhich the dealers would not buy. To hold thepump-cap and handle with one hand, and try to insert the bolts with theother, and start the nuts on the bolts at the same time, was such anannoying performance that in ordering new caps for repairs, or newpumps, the dealers would still specify the old set-screw type. Theimprovement which is the subject matter of this invention makes itpossible for one to assemble the parts very easily, supporting the capwith one hand, and with the other slipping in the fastening boltssuccessively as the cap is turned, until all are inserted, then puttingon the nuts and screwing them down until the whole structure is as rigidas though made in one piece.

The device is fully described and claimed in the followingspecifications, reference being had to the accompanying drawing, inwhich Fig. 1 is a side elevation of the upper part of a pump, showingthe improved device. Fig. 2 is a central, vertical section of the SerialNo. 690,273..

same, in the line 2-2 of Fig. Fig. 3 is an elevation of the upper end ofthe pumpbarrel, showing the disposition of annular flanges and therecess for the insertion of fastening bolts. Fig. 4: is a plan view ofthe same. Fig. 5 is a plan view of the pump cap, as seen from below.

In the drawing, the numeral 5 denotes a pump-barrel or standard, throughwhich the pump-rod 6 passes to the valve and cylinder, not shown, andhereafter designated as the standard. To the upper end of this isattached the cap 7 which carries an upstanding fulcrum 8, to which ispivoted the hand-lever 9.

Referring to Figs. 2 and 3, more particularly, it will be seen that thestandard near the upper end is provided with an annular groove 10, andbelow this is expanded in an annular flange 11. A gap 12 in this flangepermits the insertion from below of the hook-bolts 13 for holding thecap in position. The latter is socketed at 14 to fit over the top of thestandard, and rest on the flange. At suitable intervals, preferablythree, the body of the cap is expanded at 15 to form seats for saidbolts. The hooked head portions of the bolts are made rectangular, andthe seats, as shown in Fig. 5, are adapted to prevent the bolts fromturning. In Fig. 2 it will be seen that the hook of the bolt engages thegroove in the standard. while the flange of the standard at the sametime supports the bolt, whose threaded up per end passes through a hole16 at the top of the cap. With the bolts in position, and the nutsscrewed tightly, it is evident that the fulcrum-cap may be so rigidlysecured as to become and remain a stable part of the pump.

In assembling the parts the cap is set in position on the standard. Withone hand the operator then turns it so that one of the bolt-seats willregister with the recess in the flange. A bolt is then slipped in, andthe cap turned to position for the next bolt, and so on successivelyuntil all the bolts are in place. A single nut started on a bolt willnow hold the parts together, and the other nuts may be put on andtightened at convenience. In the operation none of the bolts can fallout until all are in place. To remove the cap, the nuts are taken 0H allthe bolts, and then by merely turning the cap,

the bolts Will drop out as they reach the gap in the flange.

Having thus described my invention, I claim;

1. The combination oi a pump-cap having a plurality of hook-boltsdisposed there in, and a pump-standard fitting inside said cap, andgrooved to receive the hooks of said bolts, and provided With abolt-supporting flange With a single gap to admit a bolt.

2. Combined with a pump standard shouldered at the upper end to'engageWith hook'bo.lts, and With a lower disposed flange to support the bolts,with a single gap in said flange, 21 pump-cap fitting over saidshouldered end, and provided With laterally disposed seats to receive aplurality of hook- 3. Combined with a pump-cap having a plurality oflaterally disposed hook-bolts seated therein, a pump standard having agrooved neck to receive the hooks of said bolts, and a flange below thegroove to sup port the bolts in their seats, said flange be ingcontinuous except for a single gap, through which the bolts aresuccessively inserted in their seats. In testimony whereof I affix mysignature in "presence of tWo Witnesses.

' GEORGE G. KUNZMANN. l Vitnesses GEO. A. J oHNsoN, MARK E. BRODIE.

